Circulating efficient pulping system

Abstract

The utility model discloses a circulation type efficient pulping system, a powder inlet of a pulping machine is communicated with a powder bin, at least two circulation lines are arranged between a liquid inlet and a liquid outlet of the pulping machine in parallel, each circulation line is provided with a self-circulation line, and when one circulation line is communicated with the pulping machine, the self-circulation line is communicated with the pulping machine. And the other circulation lines are disconnected from the pulping machine, and the self-circulation line of the pulping machine is connected. According to the utility model, the at least two circulation lines with the self-circulation lines are arranged between the liquid inlet and the liquid outlet of the pulping machine in parallel, so that when one circulation line is used for mixing and dispersing a batch of pulp, the other circulation lines are used for fully dispersing and shearing the mixed pulp through the self-circulation lines; the link of conveying the slurry from one circulating tank to another circulating tank is saved, the slurry production efficiency is improved, the energy consumption is reduced, and the material loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pulping equipment, in particular to a circulating high-efficiency pulping system. Background Art

[0002] The circulating high-efficiency pulping system is used for powder-liquid mixing and slurry dispersion to meet the production requirements of high-quality slurries with low viscosity, high solid content and high stability.

[0003] Chinese Utility Model Patent CN219518616U discloses a circulating pulping system. The premixer of the powder-liquid mixing module is connected to a silo and a first circulation tank. The second circulation tank of the slurry dispersion module is connected to the first circulation tank and a disperser. Powders are input into the premixer from the silo, and liquids are input into the premixer from the first circulation tank. The premixer mixes the powders and liquids to form a slurry. The slurry is input into the first circulation tank and mixed with the remaining liquids in the first circulation tank, and then re-input into the premixer to be mixed with the powders, so that the solid content of the slurry in the first circulation tank rises to a preset value to form a preliminary slurry. When the slurry with the solid content in the first circulation tank rising to the preset value is determined to be the preliminary slurry that meets the dispersion condition, the powder-liquid mixing process is stopped, and the preliminary slurry is transported to the second circulation tank for storage. After all the preliminary slurry is transported from the first circulation tank to the second circulation tank for storage, the slurry dispersion module starts to perform the slurry dispersion process to disperse the preliminary slurry. The first circulation tank and the second circulation tank of this circulating pulping system are in series. Both the first circulation tank and the second circulation tank only perform single circulation. The first circulation tank only performs the task of circulating mixing, and the second circulation tank only performs the task of circulating dispersion. After the slurry of one batch is mixed in the first circulation tank, it is all transported to the second circulation tank before the mixing of the next batch of slurry can be carried out. The transportation of the slurry from the first circulation tank to the second circulation tank not only requires transportation time, but also requires a large amount of energy consumption during the transportation process, and the material loss will also increase accordingly, which not only affects the slurry production efficiency, but also has high energy consumption and high material loss. Summary of the Utility Model

[0004] In view of the above-mentioned shortcomings of the existing circulating pulping system, the applicant provides a circulating high-efficiency pulping system with a reasonable structure. At least two circulating lines are connected in parallel to the pulping machine, and each circulating line has its own circulating line. When one circulating line is connected to the pulping machine for dispersion and mixing, the other circulating line is dispersed through its own circulating line, saving the link of transporting the slurry from one circulation tank to another, improving the slurry production efficiency, reducing the energy consumption, and reducing the material loss.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A cyclic high-efficiency pulping system, the powder inlet of the pulping machine is connected to the powder bin, and at least two circulation lines are arranged in parallel between the liquid inlet and the liquid outlet of the pulping machine. Each circulation line has a self-circulation line. When one circulation line is connected to the pulping machine, the other circulation lines are disconnected from the pulping machine and connected to their self-circulation lines.

[0007] As a further improvement of the above technical solution:

[0008] A circulation tank is arranged on each circulation line; the pulp outlet of the circulation tank is connected to the liquid inlet of the pulping machine, and the liquid outlet of the pulping machine is connected to the pulp inlet of the circulation tank; the pulp outlet of the circulation tank is connected to the pulp inlet to form a self-circulation line.

[0009] Valves are respectively arranged between the liquid inlet and the liquid outlet of the pulping machine and the circulation tank, and valves are respectively arranged between the pulp outlet and the pulp inlet of the circulation tank.

[0010] A rotor pump is arranged on each circulation line, and the rotor pump is arranged after the circulation tank along the flow direction of the slurry.

[0011] A disperser is arranged on each circulation line, and the disperser is arranged after the circulation tank along the flow direction of the slurry.

[0012] A cooler is arranged on each circulation line, and the cooler is arranged after the circulation tank along the flow direction of the slurry.

[0013] The rotor pump, the disperser, and the cooler are arranged in sequence along the flow direction of the slurry.

[0014] The rotor pump, the disperser, and the cooler are all arranged on the path of the self-circulation line.

[0015] The structural arrangement of each circulation line is the same.

[0016] The beneficial effects of the present utility model are as follows:

[0017] In the present utility model, at least two circulation lines with self-circulation lines are arranged in parallel between the liquid inlet and the liquid outlet of the pulping machine. While one circulation line mixes and disperses a batch of slurries, the other circulation lines fully disperse and shear the mixed slurries through the self-circulation lines, saving the link of transporting the slurries from one circulation tank to another, improving the production efficiency of the slurries, reducing energy consumption, and reducing the material loss amount. Description of the Drawings

[0018] Figure 1 It is a structural schematic diagram of the present utility model.

[0019] In the figure: 100, the first circulation line; 101, the first self-circulation line; 11, the first circulation tank; 111, the first slurry inlet; 112, the first slurry outlet; 12, the first rotor pump; 13, the first disperser; 14, the first cooler; 15, the first valve; 16, the second valve; 17, the second valve;

[0020] 200, the second circulation line; 201, the second self-circulation line; 21, the second circulation tank; 211, the second slurry inlet; 212, the second slurry outlet; 22, the second rotor pump; 23, the second disperser; 24, the second cooler; 25, the fourth valve; 26, the fifth valve; 27, the sixth valve;

[0021] 300, the pulping machine; 31, the liquid inlet; 32, the liquid outlet; 33, the powder inlet;

[0022] 400, the powder bin. Specific embodiments

[0023] The following will describe the specific embodiments of the present invention in conjunction with the accompanying drawings.

[0024] As Figure 1 shown, between the liquid inlet 31 and the liquid outlet 32 of the pulping machine 300 of the present invention, at least two circulation lines are arranged in parallel, and each circulation line has a self-circulation line. When one circulation line is connected to the pulping machine 300 for dispersion and mixing, the remaining circulation lines are disconnected from the pulping machine 300 and connected to its

[0025] self-circulation line for self-circulation dispersion; the powder inlet 33 of the pulping machine 300 is communicated with the powder bin 400.

[0026] As Figure 1 shown, in this embodiment, two circulation lines are arranged in parallel on the pulping machine 300: the first circulation line 100 and the second circulation line 200. The first circulation line 100 has a first self-circulation line 101, and the second circulation line 200 has a second self-circulation line 201.

[0027] The first circulation line 100 is sequentially provided with a first circulation tank 11, a first rotor pump 12, a first disperser 13, and a first cooler 14 along the flow direction of the slurry. The first cooler 14 is connected to the liquid inlet 31 of the pulper 300. The liquid outlet 32 of the pulper 300 is connected to the first slurry inlet 111 of the first circulation tank 11. The first slurry outlet 112 of the first circulation tank 11 is connected to the first rotor pump 12. A first valve 15 is provided between the liquid outlet 32 and the first slurry inlet 111, and a third valve 17 is provided between the first cooler 14 and the liquid inlet 31. After the pulper 300 → the first circulation tank 11 → the first rotor pump 12 → the first disperser 13 → the first cooler 14 → the pulper 300 are connected, the first circulation line 100 is formed, which can disperse and mix the slurry. The first cooler 14 is also connected to the first slurry inlet 111 of the first circulation tank 11, and a second valve 16 is provided between the first cooler 14 and the first slurry inlet 111. After the first circulation tank 11 → the first rotor pump 12 → the first disperser 13 → the first cooler 14 → the first circulation tank 11 are connected, the first self-circulation line 101 is formed, which can self-disperse the slurry.

[0028] The structural arrangement of the second circulation line 200 is the same as that of the first self-circulation line 101. The second circulation line 200 is sequentially provided with a second circulation tank 21, a second rotor pump 22, a second disperser 23, and a second cooler 24 along the flow direction of the slurry. The second cooler 24 is connected to the liquid inlet 31 of the pulper 300. The liquid outlet 32 of the pulper 300 is connected to the second slurry inlet 211 of the second circulation tank 21. The second slurry outlet 212 of the second circulation tank 21 is connected to the second rotor pump 22. A fourth valve 25 is provided between the liquid outlet 32 and the second slurry inlet 211, and a sixth valve 27 is provided between the second cooler 24 and the liquid inlet 31. After the pulper 300 → the second circulation tank 21 → the second rotor pump 22 → the second disperser 23 → the second cooler 24 → the pulper 300 are connected, the second circulation line 200 is formed. The second cooler 24 is connected to the second slurry inlet 211 of the second circulation tank 21, and a fifth valve 26 is provided between the second cooler 24 and the second slurry inlet 211. After the second circulation tank 21 → the second rotor pump 22 → the second disperser 23 → the second cooler 24 → the second circulation tank 21 are connected, the second self-circulation line 201 is formed.

[0029] During the actual operation of the present utility model, when the first circulation line 100 is connected to the pulping machine 300 (the first valve 15 and the third valve 17 are opened), the first self-circulation line 101 is disconnected (the second valve 16 is closed), the second circulation line 200 is disconnected (the fourth valve 25 and the sixth valve 27 are closed), and the second self-circulation line 201 is connected (the fifth valve 26 is opened); the liquid in the first circulation tank 11 is pumped by the first rotor pump 12 and flows through the first disperser 13 and the first cooler 14 in sequence, then enters the pulping machine 300 to be mixed with the powder material, and is circulated and mixed and dispersed in the first circulation line 100; at the same time, the slurry in the second circulation tank 21 is circulated and dispersed in the second self-circulation line 201.

[0030] In the present utility model, at least two circulation lines with self-circulation lines are arranged in parallel between the liquid inlet 31 and the liquid outlet 32 of the pulping machine 300. While one circulation line is mixing and dispersing a batch of slurry, the remaining circulation lines fully disperse and shear the mixed slurry through the self-circulation lines, saving the link of transporting the slurry from one circulation tank to another, improving the production efficiency of the slurry, reducing the energy consumption, and reducing the material loss.

[0031] The above description is an explanation of the present utility model, not a limitation thereof. Without departing from the spirit of the present utility model, the present utility model can be modified in any form.

Claims

1. A circulating high-efficiency pulping system, wherein a powder inlet (33) of a pulping machine (300) is connected to a powder bin (400), characterized in that: At least two circulation lines are arranged in parallel between the liquid inlet (31) and the liquid outlet (32) of the pulping machine (300), each circulation line having a self-circulation line. When one circulation line is connected to the pulping machine (300), the remaining circulation lines are disconnected from the pulping machine (300) and connected to their self-circulation lines.

2. The circulating high-efficiency pulping system according to claim 1, characterized in that: A circulation tank is provided on each circulation line; the pulp outlet of the circulation tank is connected to the liquid inlet (31) of the pulping machine (300), and the liquid outlet (32) of the pulping machine (300) is connected to the pulp inlet of the circulation tank; the pulp outlet of the circulation tank is connected to the pulp inlet to form a self-circulating line.

3. The circulating high-efficiency pulping system according to claim 1, characterized in that: Valves are respectively arranged between the liquid inlet (31) and the liquid outlet (32) of the pulping machine (300) and the circulation tank, and valves are respectively arranged between the pulp outlet and the pulp inlet of the circulation tank.

4. The circulating high-efficiency pulping system according to claim 1, characterized in that: A rotor pump is provided on each circulation line, and the rotor pump is arranged after the circulation tank along the slurry flow direction.

5. The circulating high-efficiency pulping system according to claim 1, characterized in that: A disperser is provided on each circulation line and is arranged after the circulation tank along the slurry flow toward the circulation tank.

6. The circulating high-efficiency pulping system according to claim 1, characterized in that: A cooler is provided on each circulation line, and the cooler is arranged after the circulation tank along the slurry flow direction.

7. The circulating high-efficiency pulping system according to any one of claims 4 to 6, characterized in that: The rotor pump, disperser and cooler are arranged in sequence along the slurry flow direction.

8. The circulating high-efficiency pulping system according to any one of claims 4 to 6, characterized in that: The rotor pump, disperser and cooler are all arranged on the path of the self-circulation line.

9. The circulating high-efficiency pulping system according to claim 1, characterized in that: The structural layout of each circulation line is the same.

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